Close Call with Hot Water Tank - Fiberglass RV
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Old 08-21-2020, 12:43 PM   #1
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Name: Dick
Trailer: '15 17' LD Casita and '17 Tahoe LT
Texas
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Close Call with Hot Water Tank

Sanitized the water system last spring but didn't flush it out and let it set until today. Decided to flush it out and santize it again since I don't see being able to use it anytime soon. Started by pulling out the anode rod. It is not easy to get to back behind the burner tube and was pretty tight. Ended up standing up to put leverage on the rachet and when it came loose, it shot out like a cannon. I failed to release the pop off valve. Measured it off at 12' and putting a dent in the fence. So glad I was not still stooping down in front of it. The system still had pressure in the lines from last spring. Lesson learned.
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Old 08-21-2020, 01:47 PM   #2
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Name: Lisa
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Oh my! I had no idea they could hold the pressure so long.
Glad you are okay and I appreciate your post about this.
I will be careful to release that pop off valve first.
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Old 08-21-2020, 04:06 PM   #3
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Or you can just drain off the pressure by opening a faucet. I didn't have power connected to the trailer and tried to take a short cut. Like you, I didn't expect it to retain the pressure for 6 months.
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Old 08-21-2020, 04:28 PM   #4
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Oh my! I had no idea they could hold the pressure so long...

If they didn't, it would mean you had a leak.
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Old 08-21-2020, 04:49 PM   #5
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Originally Posted by dmad1 View Post
Or you can just drain off the pressure by opening a faucet. I didn't have power connected to the trailer and tried to take a short cut. Like you, I didn't expect it to retain the pressure for 6 months.


Do you open hot water faucet to release pressure with pump on or off?
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Old 08-22-2020, 09:27 AM   #6
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Hot Water tank

Pump off or you just defeated the purpose of bleeding off pressure.
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Old 08-22-2020, 12:15 PM   #7
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Name: Wayne & Barbara
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Originally Posted by dmad1 View Post
Sanitized the water system last spring but didn't flush it out and let it set until today. Decided to flush it out and santize it again since I don't see being able to use it anytime soon. Started by pulling out the anode rod. It is not easy to get to back behind the burner tube and was pretty tight. Ended up standing up to put leverage on the rachet and when it came loose, it shot out like a cannon. I failed to release the pop off valve. Measured it off at 12' and putting a dent in the fence. So glad I was not still stooping down in front of it. The system still had pressure in the lines from last spring. Lesson learned.
ALWAYS relieve the pressure after shutting off the pump, and/or disconnecting from City water. Just open the taps at the sink.
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Old 08-22-2020, 07:10 PM   #8
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Hot Water Tank

Wayne, do you leave the taps open until you hook up to city water again? I'm a super duper newbie, and learning heaps from you folks.



Many thanks.
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Old 08-22-2020, 07:29 PM   #9
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Originally Posted by Maria in MD View Post
Wayne, do you leave the taps open until you hook up to city water again? I'm a super duper newbie, and learning heaps from you folks.
.
Once you relieve the pressure it does not make much difference if the faucets are left open or closed. But a quick comment about using the city water connection.... First.. be sure to use a pressure regulator. Second, even with the regulator, leaks sometimes happen. I would always shut off the water at the source when leaving the site, and probably for the overnight also. Third, if you fill the onboard tank and use that instead, then you can better judge how much water you have used, and in turn how full your waste tanks are. Fourth, just because its a "city water" supply, don't automatically assume its clean and safe. Use a filter and look for any notices regarding water quality posted by the campground.
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Old 08-22-2020, 08:08 PM   #10
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"First.. be sure to use a pressure regulator. Second, even with the regulator, leaks sometimes happen. I would always shut off the water at the source when leaving the site, and probably for the overnight also. Third, if you fill the onboard tank and use that instead, then you can better judge how much water you have used, and in turn how full your waste tanks are. Fourth, just because its a "city water" supply, don't automatically assume its clean and safe. Use a filter and look for any notices regarding water quality posted by the campground."


gordon2 thank you. Please bear with me on some of these follow-up questions. I have a surge protector for electric, and I do have a regulator but it didn't occur to me to shut off the water at the source while away and overnight. Q: can the toilet be flushed with the water shut off?
Q: ref #3: by filling and using the onboard tank, do I need to do anything with a switch AND the pump? If needing to use the pump, is it just turned on to turn on the water to the sink (& toilet?) then turn it off after immediate use?
I did buy a water filter. Thanks for the tip to check water quality posted at the campground.
Looking forward to learning more from you . Thank you.
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Old 08-22-2020, 08:20 PM   #11
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Originally Posted by Maria in MD View Post
...but it didn't occur to me to shut off the water at the source while away and overnight. To be fair that is only my opinion, based on experience.

Q: can the toilet be flushed with the water shut off? No, but you can use a jug of water... just pour some water in the bowl and around the under the rim. That also works well when the rest of the plumbing is winterized or when you want to reuse gray water to save water.

Q: ref #3: by filling and using the onboard tank, do I need to do anything with a switch AND the pump? If needing to use the pump, is it just turned on to turn on the water to the sink (& toilet?) then turn it off after immediate use? Yes, that is the way it works for me. Some people leave the pump switch on.. I dont but if its all working as it should you can.
....
............
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Old 08-22-2020, 09:21 PM   #12
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Hot water tank thread

gordon2. Thank you, thank you, thank you! Great information to have. I'm going to print and tape to the pump switch because I know me, when it comes time to do, I'll have forgotten by then .
Great idea about pouring water into the toilet bowl and the use of grey water too.
And a huge PLUS for the use of color ink in your reply. That's what I need.
Thank you. I will gladly listen to any tips on anything else that might occur to you that a super newbie might be needing .
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Old 08-23-2020, 06:37 AM   #13
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Originally Posted by Maria in MD View Post
Wayne, do you leave the taps open until you hook up to city water again? I'm a super duper newbie, and learning heaps from you folks.



Many thanks.
Not if we are traveling between campsites. We have a cover on the sink, and don't want water dripping on it. But they can be left open during storage and the system is drained.
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Old 08-23-2020, 09:13 AM   #14
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Name: Dick
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As for leaving the faucets open, I learned the hard way and didn't realize the water faucet outlet was left on and turned away from the sink. Did the routine set up on arrival, connecting the city water, electric, etc. Then noticed water running out the door. When I connected the water, the open faucet ran water everywhere except into the sink.
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Old 08-26-2020, 01:23 PM   #15
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Ouch demad. Glad you werent hurt. As you say, lesson learned.
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Old 11-27-2020, 10:44 PM   #16
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Name: Charles
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For normal use, I use the fresh water tank and the pump. I do leave the pump on if I am using it frequently, such as cooking, but otherwise its on to use it and off when done. Always off before going to bed, and at night I just turn it on to flush and then back off.

I have only use city water once and kept it turned off at night and when I was gone. I do not bother with it any more, except to fill the tank.

You don't want to wake up in the middle of the night and put your feet on the floor only to discover the place is flooded, and floor ruined, and trailer possibly totaled by insurance.

Charles
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